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In Science / Elementary School | 2024-09-04

ET'S APPLYDirections: Perform the activity given below with the help or guidance of your parent/guardian.Answer the given questions and write your answers on the space provided.Materials needed:Decantation of water and soilglass or plastic cup, water, small amount of soilProcedures:1. Get the plastic cup and fill it with water.2.3.4.Put soil inside the plastic cup with water and stir.After mixing the soil and water, set it aside. After a few minutes, observe what happened.Separate the water from the soil by pouring water in another container.LiquidQuestions:N OF1. Did the soil dissolve in water? Why?ANAQUEUndissolved solid2. When you left the mixture undisturbed, what have you observed?3.How did you separate the water from the soil? What technique did you use to separate themixture?​

Asked by mancerashine

Answer (1)

1. Did the soil dissolve in water? Why? No, the soil did not dissolve in water. This is indicated by the answer "Undissolved solid" provided in the context. Soil is a complex mixture of various components, including sand, silt, clay, organic matter, and minerals. While some of the smaller particles in soil might be able to suspend in water, the majority of the soil particles are too large to dissolve. 2. When you left the mixture undisturbed, what have you observed? You would have observed the soil settling to the bottom of the container, forming a distinct layer separate from the water. This is because the soil particles are denser than water and will sink over time. The heavier particles settle first, followed by lighter ones, creating distinct layers. 3. How did you separate the water from the soil? What technique did you use to separate the mixture? You likely used a technique called decantation to separate the water from the soil. Decantation involves carefully pouring the water off the top of the mixture, leaving the settled soil behind. This works because the soil particles are heavier and settle to the bottom, allowing you to remove the water without disturbing the sediment. Explanation of Decantation: Decantation is a simple and effective method for separating mixtures where one component is a solid that settles to the bottom of a liquid. It relies on the difference in density between the solid and liquid. Here's how it works: 1. Settling: The mixture is allowed to stand undisturbed for a period of time, allowing the denser solid particles to settle to the bottom.2. Pouring: The liquid is carefully poured off from the top of the container, leaving the solid behind.3. Separation: The liquid that is poured off is now relatively free of the solid particles. Important Note: Decantation is not a perfect separation method. Some of the finer solid particles might remain suspended in the liquid.

Answered by itssoya00 | 2024-09-07